They always get rid of the revert to previous Ui option eventually.
I used the browser.proton.enabled feature for a while before they removed that, Then I started using The Photon style of Firefox-Ui-Fix
They always get rid of the revert to previous Ui option eventually.
I used the browser.proton.enabled feature for a while before they removed that, Then I started using The Photon style of Firefox-Ui-Fix